Tube drawing machine



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Aug. 29, 1933. J. v. GlEsLER TUBE DRAWING MACHINE Filed July 1,v 1929' 19 Sheets-Sheet l 9 Patented Aug. 29, 1933 UNITED STATES PATENT OFFICE TUBE DRAWING MACHINE Application July 1, 1929. Serial No. 375,161

66 Claims.

This invention relates to mechanism for drawing tubes, and particularly to mechanism for drawing relatively-long, relatively-thin walled tubes in accordance with the process diclosed and claimed in the patent of Weston M. Fulton, No. 1,654,585, granted January 3, 1928, and entitled Method and apparatus for drawing tubes.

It is an object of this invention to provide a machine for drawing tubes in accordance with the aforesaid process, which is automatic in character, which is simple in operation so as to reduce the number of operatives needed to attend the machine, and which is highly eiiicient in operation.

Another object of this invention is to provide a machine of the type characterized which is so constructed that there is no unbalanced moment of force, acting on the drawing mechanism, with respect to the horizontal plane of the axis of the tube being drawn.

Another object of the invention is to provide a machine of the type characterized with simple means whereby the tail block may be easily and quickly attached to the end of the tube.

Another object of the invention is to provide a machine of the type characterized with means whereby the tail block may be moved quickly into position for attachment to the end of the tube without danger of destructive impacts or shocks to the machine.

Another object of the invention is to provide a machine of the type characterized with means whereby the tail block may be automatically detached from the tube at the end of the drawing portion, and whereby, if desired, the finished tube may be ejected from the machine.

Another object of the invention is to provide a machine of the type characterized with means for operating the tail block which is symmetrically disposed with respect to the axis of the tube, so that there are no unbalanced moments of force with respect to the horizontal plane of the axis of the tube being drawn.

Another object of the invention is to provide a machine of the type characterized with improved means for moving the die block into and out of operative position.

Another object of the invention is to provide a machine of the type characterized with improved means for guiding the punch.

Another object of the invention is to provide a machine of the type characterized with improved means for moving the punch into and out of operative relationship with the die.

Another object of the invention is to provide a machine of the type characterized with imstrong rugged elements, and which may be safely operated at a relatively high speed.

Other objects will appear as the description of the invention proceeds.

The invention is capable of receiving a variety of mechanical expressions, one of which is shown on the accompanying drawings, but it is to be expressly understood that the drawings are for purposes of illustration only, and are not to be construed as the definition of the limits of the invention, reference being had to the appended claims for that purpose.

Referring in detail to the drawings, wherein the same reference characters are employed to designate corresponding parts in the several guresz- Figs. 1, la, and 1b, together constitute an elevation of the machine, Fig. 1 being an elevation of the power end of the machine, Fig. 1a being an elevation of the intermediate portion of the nmchine, and Fig. 1b being Van elevation of the tail end of the machine;

Figs. 2, 2a, and 2b are axial sections through the machine, Fig. 2 being an axial section through the power end of the machine, Fig. 2a being an axial section through the intermediate portion of the machine and showing the punch in elevated inoperative position, and Fig. 2b being an Yaxial section through the tail end of the machine showing the position of the parts at the end of the drawing operation;

Figs. 3, 3, and 3b are plan views of the machine, Fig. 3 being a plan of the power end of the machine, Fig. 3a being a plan view of the intermediate portion of the machine, and Fig. 3b being a plan view of the tail end of the machine, the parts being shown in the same relative positions as in Figs. 2, 2R, and 2b;

Figs. 4, 4R, and 4b are sectional views through the punch, chuck and chuck-operating means, Fig. 4 being a sectional View through the rearward end of the punch, Fig. 4a being a sectional 

